CVE-2017-5255
HighPublic exploitIn version 3.5 and prior of Cambium Networks ePMP firmware, a lack of input sanitation for certain parameters on the web management console allows any authenticated user (including the otherwise low-privilege readonly user) to inject shell meta-characters as part of a…
Published Dec 20, 2017 · Updated May 12, 2026
Key Facts
Patch immediately- CVE-2017-5255 is a high-severity vulnerability (CVSS 8.8 v3) affecting Epmp 1000 Firmware (Cambiumnetworks), Epmp 2000 Firmware (Cambiumnetworks), ePMP.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 74% probability of exploitation in the next 30 days.
- Fixed versions are available, including Epmp 1000 Firmware 3.5, Epmp 2000 Firmware 3.5.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3
8.8
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
74%
Higher than 99.4% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2017-5255 brief as a PDF
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Description
In version 3.5 and prior of Cambium Networks ePMP firmware, a lack of input sanitation for certain parameters on the web management console allows any authenticated user (including the otherwise low-privilege readonly user) to inject shell meta-characters as part of a specially-crafted POST request to the get_chart function and run OS-level commands, effectively as root.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Epmp 1000 FirmwareCambiumnetworks | See advisory | 3.5 |
| Epmp 2000 FirmwareCambiumnetworks | See advisory | 3.5 |
| ePMP | >= 3.5 and prior | n/a |
Patched Releases
Epmp 1000 Firmware
3.5
Epmp 2000 Firmware
3.5
Timeline
Publicly disclosed
Dec 20, 2017
Last updated
May 12, 2026
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
FAQ
Common Questions.
In version 3.5 and prior of Cambium Networks ePMP firmware, a lack of input sanitation for certain parameters on the web management console allows any authenticated user (including the otherwise low-privilege readonly user) to inject shell meta-characters as part of a specially-crafted POST request to the get_chart fu…
Affected: Epmp 1000 Firmware (Cambiumnetworks); Epmp 2000 Firmware (Cambiumnetworks); ePMP versions >= 3.5 and prior. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Epmp 1000 Firmware 3.5, Epmp 2000 Firmware 3.5.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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